Cephem compound, its production and its use for producing cephem
antibiotics
    1.
    发明授权
    Cephem compound, its production and its use for producing cephem antibiotics 失效
    Cephem化合物,其生产及其用于生产头孢类抗生素的用途

    公开(公告)号:US5969131A

    公开(公告)日:1999-10-19

    申请号:US932835

    申请日:1997-09-18

    CPC分类号: C07D501/00 Y02P20/55

    摘要: A 3-[(E)-1-propenyl]cephem compound represented by formula (I): ##STR1## wherein R represents hydrogen, a protective group for an amino group, or the group shown by formula (II): ##STR2## in which R.sup.3 is a protective group for an amino group, R.sup.4 is a protective group for a hydroxyl group, and W is --CH.dbd. or --N.dbd.; R.sup.2 represents a protective group for a carboxyl group; and X represents hydrogen or chlorine. The compound is useful as an intermediate for producing cephem antibiotics and is prepared by isomerizing the corresponding 3-[(Z)-1-propenyl]cephem compound in an inert organic solvent in the presence of an aromatic thiol. The compound of formula (I) wherein X is chlorine can be converted into a 3-[(E)-3-ammonio-1-propenyl]cephem derivative through the reaction with a tertiary amine.

    摘要翻译: 由式(I)表示的3 - [(E)-1-丙烯基]头孢烯化合物:其中R表示氢,氨基保护基或式(II)所示的基团:其中R3为保护基 氨基的基团,R4是羟基的保护基,W是-CH =或-N =; R2表示羧基的保护基; X表示氢或氯。 该化合物可用作生产头孢类抗生素的中间体,并且通过在惰性有机溶剂中在芳族硫醇存在下使相应的3 - [(Z)-1-丙烯基]头孢烯化合物异构化而制备。 其中X为氯的式(I)化合物可通过与叔胺的反应转化为3 - [(E)-3-氨基-1-丙烯基]头孢烯衍生物。

    Cephem compound, its production and its use for producing cephem
antibiotics
    2.
    发明授权
    Cephem compound, its production and its use for producing cephem antibiotics 失效
    Cephem化合物,其生产及其用于生产头孢类抗生素的用途

    公开(公告)号:US5708165A

    公开(公告)日:1998-01-13

    申请号:US273912

    申请日:1994-07-12

    CPC分类号: C07D501/00 Y02P20/55

    摘要: A 3-�(E)-1-propenyl!cephem compound represented by formula (I): ##STR1## wherein R represents hydrogen, a protective group for an amino group, or the group shown by formula (II): ##STR2## in which R.sup.3 is a protective group for an amino group, R.sup.4 is a protective group for a hydroxyl group, and W is --CH.dbd. or --N.dbd.; R.sup.2 represents a protective group for a carboxyl group; and X represents hydrogen or chlorine. The compound is useful as an intermediate for producing cephem antibiotics and is prepared by isomerizing the corresponding 3-�(Z)-1-propenyl!cephem compound in an inert organic solvent in the presence of an aromatic thiol. The compound of formula (I) wherein X is chlorine can be converted into a 3-�(E)-3-ammonio-1-propenyl!cephem derivative through the reaction with a tertiary amine.

    摘要翻译: 由式(I)表示的3 - [(E)-1-丙烯基]头孢烯化合物:其中R表示氢,氨基保护基或式(II)所示的基团: (II)其中R3是氨基的保护基,R4是羟基的保护基,W是-CH =或-N =; R2表示羧基的保护基; X表示氢或氯。 该化合物可用作生产头孢类抗生素的中间体,并且通过在惰性有机溶剂中在芳族硫醇存在下使相应的3 - [(Z)-1-丙烯基]头孢烯化合物异构化而制备。 其中X为氯的式(I)化合物可通过与叔胺的反应转化为3 - [(E)-3-氨基-1-丙烯基]头孢烯衍生物。